Fire-extinguishing apparatus.



w.-C. SCHULTZ.

FIRE EXTINGUISHING APPARATUS.

kAPPLICATION HLED MAR.20. 1915.

Patented Apr. 16, 1918.

/*A U @my To allow/bom t may/concern: a {,Be it known thatl, WILLIAM C.SCHULTZ, acitizen of theUnited States, and resident of Wauwatosa, in thecounty of Milwaukee andState of Wisconsin, have invented certainnew`andffuseful Improvements in Fire- Illxtiii-guishing Apparatus; and I dohereby declare, that the following is a full, clear,

- and. exact description thereof. f f

My." invention consists.- in the apparatus herein particularly set forthwith reference to -tlie accompanyingdrawings' and pointed out in theclaims of this specification; its objectI *beingI to yprevent spread and`rapidly extinguish Vfire occurring in an oil-storage tank or, other`structure into' which said apparatus has its discharge. Said inventionhas especial reference to the use of carbon tetrachloridas a fireextinguishing' medium and to the `distribution .of the same in anatomiaed'condition by meansI4 of a gaseous lfluid;,preferably carbon-`diox/id gas, under' pressure against saidcarbo l tetrachlorid in acontainer for the two that has a normally seale(l .dischargeconduitlhaving ports therein intermediatefofit's inlet' and outlettopprovile foliangimmediate simultaneous escape,v

or' the lextinguishing liquid and gaseous fluid through the conduit whenthe same is unsealed, said gaseous Huid under pressure constituting theforce by whichisaid liquid is' expelled therewith inanatomizedcondition. The carbon dioXid gas is thus saturated withtetrachlorid, and the two extinguishin mediums then intimately mixedhave rapi diffusion and descent in a structure as aforesaid with whichmy improvedapparatus is associated to yring therein.

Figure l of the dra 'ings represents a vertical sectional view/of myimproved :lirecxtinguishing appatatus by 'which my novelfire-extinguishingprocess maybe made effective, and f f Fig. 2, ahprizont'al sectional 'viewof a detail of the apparatus indicated byline 2-2inFigLL 'f' Referring by numeralsto the draWings,-3 indicates acbntainerhaving a neck 'reinforcement 4. Screwthreaded in the neck ofthe container is a shank arin 5 of'a `hollow .fitting constituting partof a-discharge-com dtywith which said container is pv' vided andtheinner end of said arm is reduced an recessed-.Srewthreaded on thereduction quickly smother a iie. occur- .l

` Winti-AM c. SGHUIJTZ,l oF wAUwATosAQvi/Isconsm. l jf Yof saidfitting-army isa nipple 6, and caught rmnltexirrneursnms APPARATUS. y

appncmn inea Mammalian. 1serialA Nb. 15,937." l

vSpecification. of Letters Patent. i ,p PateutedfpiI- 191g;

between the two isagflang'e 7 upon anend of.,.V y. a a pipe-member 8 ofsaid conduit thatextends through the nipple. A' bulbous 'coupling 9 andanother pipe-member .10 are shown as constituting parts of the conduit,saidy :pipe-,1 members being connected. by the coupling? *The conduitextends'in the container .to near- .11-

`with ports 11 intermediate ofzits' inlet and- A'the bottom 'ofthesame',y and it 4is.'provided .w

pling-member 9 of the-conduit approximately parallel to the bore ofsaidcontainer' vi .1 vas a matter of preferred construction fp/'r "arrivingat the best results inpractice. A "volume 12 ofcalbon tetrachlorid orother fire extinguishing liquid is placed in the a containerpreferablybelow the 4portsof the *i conduit afores'aid,and the remainderof vsaid:

container is filled vwith 'a gaseousiiuid, prefegainst astop-piston"14,` that' has, displacement into a shell-armv 15 of saidfitting. The

shank-arm 5 of. said fitting; lThe latchgis which piston isnormallyinvthe intersection of the bores of the i'itting/above specified.

The latch 16 is part of a shackle 16 coupled to a rod 18 that extendsthrough a sleeve 19, and astraddle of the rod in opposi-` tion to acollar 20 on the sleeve is a plug 21 having an outwardly shouldered stem22 that extends through a hollow arm 23 of the aforesaid fitting intowhich the plug is retractive. Fast on the stem 7, outside of thefitting-arm y23, is the collar-end 24a of a lifting rod 24:, by whichprovision is had for .manual displacement of the plug 21 to permitretraction of the piston 14 and an autolmatic displacement of the seal13, under pressure vfrom within the' container, the result being a iowof the contents of said container through the aforesaid conduit.

Abuttinga collar 25 on the sleeve 19, outward from the nozzle end oftheaforesaid tting, is a tube 26 secured by fusible solder to a tube 27that is loose on the rod /l8, and a nut 28 is run on a screwthread ofsaid rod against tht outer end of said tube.

erably carbondibxidgas, under pressurerl y, l A exible; seal 13ise'mp'loyedjin thel rel. f-

`cess of the arm '5 of the aforesaid fitting ,e

y s'ofii piston is heldin normalpositol k'by a retractive latch '16inthe boreof lthe .noz'zlearm 17'of the 4itting at right-angles to the@v25 discharge and thus accomplish the result to rlal No.l 879,915.

In practice the nozzle of the above described apparatus extends into anoil-storage tank. or other structure and said apparatus is vmanuallyunsealed, as above described orautomatically unsealed, as a result of amelting away of the fusible solder between the tubes 26 and 27 in theevent of iire in said structure, whereupon there is an automaticdischarge of the contents of the container, the gaseous liuid thereinunder pressure being the force by which the liquid also in saidcontainer is expelled. If the liquid is below the ports 11 of theconduit,

-some of the gaseous fluid will escape from the nozzle end of theconduit simultaneous with said liquid to atomize the same at the whichmy invention is particularly directed. Should it occur that the volumeof liquid in the container is over the conduit-ports when the containeris insealed, the iiow of said liquid will precede that of the gaseousfluid until such time as said ports are uncovered, whereupon the twomediums will flow together through the conduit to have a simultaneousdischarge therefrom, and all of said liquid having been discharged, thefremaining gaseous fluid is free to discharge and diffuse itself over themixture of said fluid and atomized liquid. The liquid and gaseous fluidbeing both re-extin uishing mediums, the best result is attaine by thesimultaneous discharge ,cf the two from the conduit of the apparatus inthe form of a spray in which they are intimately mixed to therebyintensify the 0extinguishing effect of both, and the two chemicalsaforesaid have been found best suited to my purpose.

I claim: l

1. A lire extinguishing apparatus comprising a container adapted tocontain in its lower portion a volume of tetrachlorid and in its upperportion a volume of carbon dioxid gas under pressure, a conduit in thecontainer land extending from near the bottom thereof, an outlet forsaid conduit outward of the container, and inlet ports in said conduitadapted to be normally 'disposed above the liquid level, said portsbeing approximately parallel to the bore of the container, substantiallyas described. f y

2. A. fire `extinguishing apparatus comprising a container adapted tocontain fire extinguishing mediums, aA conduit in the container andextending from near the botl tom thereof, said 'conduit comprising twosections and having a normally sealed outlet and being open at itsbottom, a bulbous coupling coimecting the sections of said conduit anddisposed intermediate the top and bottom of said container, ports insaid coupling, said ports being approximately Y parallel to the bore ofthe container substantially as described.

3. A fire extinguishing apparatus com* prising a container adapted tocontain iire extinguishing mediums, a .conduit in the container andextending from near the b0t tom thereof, said conduit having a normallysealed outlet and beingl open at its bottom, and an enlargementintermediate the ends of said conduit, and having inlet ports therein.

In testimony that I claim the foregoing I have hereunto set my'hand atMilwaukee in the county of Milwaukee and State of Wisconsin in thepresence of two witnesses.

i WILLIAM C. SCI-IUL'IZ.

Witnesses:

N. E. OLIPHANT, M. E. DOWNEY.

